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Home Q & A Board Science-Related Homework Help Physics
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rk90 rk90
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11 years ago
this an SAT mathematics level 2 questions

how do u solve this?

the answer is 9.11
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wrote...
#1
11 years ago
= sqrt [ (-3 -2)^2 + (6 - (-1))^2 + (7-4)^2]
= sqrt [(-5)^2 + 7^2 + 3^2]
= sqrt [25 + 49 + 9]
= sqrt (83)
= 9.11

it is basically the square root of the sum of the squares of the difference in lengths in the x, y, and z directions.

Watch the signs- I messed up the first time!
Answer accepted by topic starter
irinairina
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11 years ago
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